never seen every 10 minutes. usually it is every 20 minutes at best. and i have been on switchbacks. when they switchback at 30th street you have to get off. usually you are not told until the stop is coming up. then you have to pile out. many times it has been raining when you have to pile out. there is no bus stop with an overhead there to protect you from the rain. so, you know, you are just standing out there. usually there are a lot of people standing out there. several times i have even just walked down to mission street to catch a mission street bus to get home. last friday i was on a switchback at glen park. when i got on at 16th and church it said balboa station.